Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN

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FXUS64 KMRX 181437 AAA
AFDMRX

Area Forecast Discussion...UPDATED
National Weather Service Morristown TN
1037 AM EDT Sun Jun 18 2017

.DISCUSSION...
Moisture and instability are quite a bit higher in the 12Z OHX
sounding compared to yesterday, thanks to a deep SW flow ahead of
an approaching trough. Showers are already developing in southern
Middle TN and northern AL. The HRRR has not picked up on this
development. Some adjustments to PoP/Wx grids will be needed to
favor higher rain chances in southern sections over the next few
hours, and lower chances in northern sections where mesoanalysis
shows less instability. Severe threat looks low/marginal until
greater shear and upper level diffluence develops tonight as the
trough gets closer.

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...None.
TN...None.
VA...None.
&&

$$

DGS



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